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The Sperm leaves the male urethra and enters through the Vagina
The sperm travels through the vagina into the cervix.
This is the Fallopian tubes where only 10-30 sperm are left and they are safe from attacks and are nourished and can last several hours. However only one tube is the correct one son the ones who go down the wrong one will die.
The sperm travels through the cervical canal then into the uterus.
The sperm must navigate through the uterus. Muscular contraction will help guide the sperm to the Fallopian tubes. Many will die after a white blood cell attack in the uterus.
This is the Uterotubal junction. it is the door way to the Fallopian tubes and only the ones that show proper characteristics can get through
Fertilization: The sperm must attempt to find the egg at the end of the Fallopian tubes. There is only 2 sperm left and only one can break in.
Finally Implantation and the egg travels through the Fallopian tubes down the the wall of the uterus were it begins to grow and develop
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